Upper Extremity Muscle Innervations Flashcards
Trapezius
Spinal Accessory
C3/4
SCM
Spinal accessory
C3/4
Rhomboids
Dorsal scapula
C4/5
Supraspinatus
Suprascapular
Upper trunk
C5/6
Infraspinatus
Suprascapular (after traveling thru spinoglenoid notch)
Upper trunk
C5/6
Biceps brachii
Musculocutaneous
Lateral cord
Upper trunk
C5/6
Brachialis
Musculocutaneous
Lateral cord
Upper trunk
C5/6
Deltoid
Axillary
Posterior cord
Upper trunk
C5/6
Teres minor
Axillary
Posterior cord
Upper trunk
C5/6
Brachioradialis
Radial n
Posterior cord
Upper trunk
C5/6
Serratus anterior
Long thoracic n
C5, 6, 7
Pectoralis major
Medial and lateral pectoral n
Medial and lateral cords
Upper, middle, and lower trunks
C5-T1
Pronator teres
Median n
Lateral cord
Upper and middle trunk
C6/7
Flexor carpi radialis
Median n
Lateral cord
Upper and middle trunk
C6/7
Extensor carpi radialis longus
Radial n
Posterior cord
Upper and middle trunks
C6/7